Passaic City is the extreme case. More than half its housing went up before 1940, and three out of four households rent.
Paterson has the volume. 36,441 renter households, more than Passaic City and Clifton combined, in a city where 77% of homes predate 1980. In Clifton, 84% of housing is pre-1980 and 13,593 households rent. Haledon and Prospect Park are small, and both are majority renter.
So in this county the NJ lead-safe certification law applies to most rental units, not a handful.
The state decides the inspection method, town by town. Where at least 3% of tested children under six show elevated blood lead, NJ DCA requires dust wipe sampling. Everywhere else, a visual inspection meets the law. For 2025-26, Passaic County splits like this:
| Town | Method | Renter households | Built before 1980 |
|---|---|---|---|
| Paterson | Dust wipe | 36,441 | 77% |
| Prospect Park | Dust wipe | 1,198 | 96% |
| Passaic City | Visual | 16,123 | 86% |
| Clifton | Visual | 13,593 | 84% |
| Wayne | Visual | 3,922 | 66% |
| Hawthorne | Visual | 2,354 | 82% |
| Haledon | Visual | 1,648 | 74% |
Notice Passaic City. It has the oldest housing in the county and still gets a visual, because the method follows children's blood lead data, not building age. Don't assume. In Paterson, a visual-only inspection doesn't meet the law.
Sources: NJ DCA 2025-26 Lead-Based Paint Inspection Methodology list; N.J.A.C. 5:28A (inspection cycle, tenant turnover and exemptions); U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates.
$125 to $150 per unit, and the lab fee for dust wipe samples is included. A Paterson three-family is $375 to $450 for the whole building. Portfolios of five units or more get bulk pricing.
For how NJ inspection pricing is put together, see the NJ lead inspection cost breakdown.
Paterson, Passaic, Clifton, Wayne, Hawthorne, Woodland Park, Haledon, North Haledon, Prospect Park, Little Falls, Totowa, Wanaque, Bloomingdale, Pompton Lakes, Ringwood, and West Milford. All 16 municipalities.
The northern end of the county is a different market. In West Milford only 11% of households rent, and in Ringwood it's 4%.
Next door: Essex County, Bergen County and Morris County. Statute details and penalties: NJ lead law reference.
Tell us which towns your units are in and how many there are.